FREE! - Separating Mixtures Worksheet | Science | Year 5 and 6 - Free Printable

Problem Description:

The task involves matching processes used to separate mixtures with their correct descriptions. The image provides a list of separation processes on the left and their corresponding descriptions on the right. Additionally, there is a table at the bottom where students are required to write the process used to separate specific mixtures.

Solution:

#### Step 1: Match Processes to Their Descriptions
We need to draw lines from each process to its correct description. Here’s how we can match them:

1. Evaporating and Condensing:
- Description: Separates liquids which have different boiling points.
- Explanation: This process is used to separate a liquid from a solution by heating it until it evaporates, then cooling it to condense it back into a liquid form. It works because different liquids have different boiling points.

2. Decanting:
- Description: Separates insoluble solids from liquids.
- Explanation: Decanting involves pouring off the liquid from a mixture of solid and liquid without disturbing the solid particles. This is effective for separating solids that do not dissolve in the liquid.

3. Magnetism:
- Description: Separates iron and steel from non-magnetic materials.
- Explanation: Magnetism uses a magnet to attract magnetic materials (like iron and steel) while leaving non-magnetic materials behind.

4. Filtering:
- Description: Separates soluble solids from liquids.
- Explanation: Filtering uses a filter paper or mesh to allow a liquid to pass through while retaining solid particles. This is useful for separating solids that are dissolved in a liquid.

5. Sinking:
- Description: Separates two liquids which have different weights.
- Explanation: Sinking refers to the separation of two immiscible liquids based on their densities. The denser liquid will sink below the less dense liquid.

#### Step 2: Fill in the Table for Specific Mixtures
Now, we need to determine the appropriate separation process for each mixture listed in the table:

1. Salt + water:
- Process: Evaporating and Condensing
- Explanation: Salt dissolves in water, so to separate them, we can evaporate the water (which turns into vapor) and then condense it back into liquid form, leaving the salt behind.

2. Oil + water:
- Process: Decanting
- Explanation: Oil and water are immiscible liquids, meaning they do not mix. Oil is less dense than water, so it floats on top. Decanting allows us to pour off the oil without disturbing the water.

3. Pasta pieces + water:
- Process: Decanting
- Explanation: Pasta pieces are solid and do not dissolve in water. Decanting allows us to pour off the water without disturbing the pasta pieces.

4. Iron + sand:
- Process: Magnetism
- Explanation: Iron is magnetic, while sand is not. Using a magnet, we can attract the iron particles and separate them from the sand.

5. Pepper + sugar:
- Process: Filtering
- Explanation: Pepper and sugar are both solids, but pepper is larger in size. Filtering can be used to separate the smaller sugar particles from the larger pepper particles.

6. Oil + vinegar:
- Process: Sinking
- Explanation: Oil and vinegar are immiscible liquids with different densities. Oil is less dense and floats on top of vinegar. Sinking (or layering) allows us to separate them based on their densities.

Final Answer:

#### Matching Processes to Descriptions:
- Evaporating and Condensing → Separates liquids which have different boiling points.
- Decanting → Separates insoluble solids from liquids.
- Magnetism → Separates iron and steel from non-magnetic materials.
- Filtering → Separates soluble solids from liquids.
- Sinking → Separates two liquids which have different weights.

#### Filling in the Table:
| Mixture | Process |
|------------------|-------------------|
| Salt + water | Evaporating and Condensing |
| Oil + water | Decanting |
| Pasta pieces + water | Decanting |
| Iron + sand | Magnetism |
| Pepper + sugar | Filtering |
| Oil + vinegar | Sinking |

$$
\boxed{
\begin{array}{|c|c|}
\hline
\text{Mixture} & \text{Process} \\
\hline
\text{Salt + water} & \text{Evaporating and Condensing} \\
\text{Oil + water} & \text{Decanting} \\
\text{Pasta pieces + water} & \text{Decanting} \\
\text{Iron + sand} & \text{Magnetism} \\
\text{Pepper + sugar} & \text{Filtering} \\
\text{Oil + vinegar} & \text{Sinking} \\
\hline
\end{array}
}
$$